Mathematics, 02.06.2021 19:00 231agoad

A simple random sample of 150 San Antonio area policemen found that the average time these police officers had worked for the police department was 16 years with a standard deviation of 5 years. Ten years ago the average amount of time policemen stayed on the job was 15 years.

What is the test statistic And P value that the researchers will use for this significance test?

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